AMC Guide to Mound Desert Island and Acadia National Park compiled by the Appalachian Mountain Club [Published, softcover book], Box: 3, Folder: 2. Natural History Art and Illustration by D. D. Tyler, MS 337. University of Kansas. Kenneth Spencer Research Library. https://archives.lib.ku.edu/repositories/3/archival_objects/310457 Accessed June 15, 2025.